Questworld12 wrote:Another question bother me.Why is he named "Bumblebee"? Are there bumblebees on Cybertron?

You can say the same about Jazz as well.

The most probable answer to that, is that it was a 1980's kid's show created for the sole purpose of advertising and promoting a line of toys; the details didn't really matter back in those days.

I've read several fan rationalizations in the past years, and this is by far the most popular; some surmise it was a designation aka codename given AFTER they landed on Earth, and their real Cybertronian names are unpronounceable by humans.